About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Powder-Based Manufacturing and Repair of Large Structural Components for Critical Applications
|
| Presentation Title |
Mechanical Property Enhancement Through Multi-layer Deposition of Dissimilar Materials Using Directed Energy Deposition |
| Author(s) |
Hyejin Song, Hojin Lee, Jin Seok Jang, Dongyong Park |
| On-Site Speaker (Planned) |
Hyejin Song |
| Abstract Scope |
Directed Energy Deposition (DED), which utilizes metal powders and a high-power laser to selectively deposit material onto a substrate, is widely employed for the repair and refurbishment of engineering components. In this study, multi-layer structures were fabricated on a medium-carbon low-alloy steel substrate via DED using both compositionally similar and dissimilar feedstock materials. The specimen with dissimilar material exhibited a recrystallized fine-grained microstructure at the interlayer interface, in contrast to the more coarsened structure formed with similar material deposition. This microstructural refinement resulted in significant improvement in tensile properties. These findings demonstrate that dissimilar material deposition via DED offers a promising strategy for improving the mechanical performance of repaired components in critical structural applications. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Characterization, Iron and Steel |